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Chanvadee N.

asked • 03/03/17

Finding points/coordinates and linear equations?

In the quadrilateral ABCD, the points of A and C are (-1,4) and (2,-1) respectively. The line CD is parallel to the line with equation x+4y+8=0 and D lies on the x-axis. The foot of the perpendicular from A to BC bisects BC and rests on the x-axis with x-coordinate 3
 
a) Find coordinates of B
b) Find the equation of DC and AD
 
Super stuck on this, no understanding what so ever.

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